Joseph  frank dunneback



Ajlfl UNITED d"STATES PATENT OFFICE.

JOHN S. CLARKE, OF DETROIT, MICHIGAN, ASSIGNOR TO HIMSELF AND JOSEPHJ FRANK DUNNEBAOK, OF SAME PLACE.l

FEED-,WATER APPARATUS FOR STEAM-BOILERS.

SPECIFICATION forming part of Letters Patent No. 276,354, dated April 24, 1883.

' Y Application filed vJanuary 31, 1883. (No model.)

To altwhom it may concern:

Be it known that l, JOHN S. CLARKE, of Detroit, in the count-y of Wayne and State of Michigan, have invented a new and useful lmprovement in Feed Water Apparatus for SteaniBoilers, of which the followingis a full, clear, and exact description. f

My present invention is an improvement on the feed-water regulator shown in myapplication for patent tiled August 24, 1882, and allowed October 9, 1882.

Thelirstpartofmyinvention relates to means for obtaining uniform pressure, both internally and externally', of the float, and for keeping water from entering the iioat.

The second part of the invention relates to a relief-valve, which is operated automatically by the main valve, for relieving the pressure when the main or regulating valve is closed.

The third part of the invention relates to means for working an injector or inspirator for feeding the boiler.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the gures. Figure l is a sectional elevation of my improved apparatus. Fig. 2 is a detail section of the relief-valve. Fig. 3 is a sectional elevation, showing the arrangement of the apparatus for use upon alocomotive or other boiler for starting an injector or pump. Fig. 4 shows the relief-valve separately.

A is the body ot' the regulator, attached to the boiler at T, substantially as shown in my aforesaid application.

Bis the doat, and F F the valves of the regulator.

E is the stem or guide of the float, consisting of a tube extending from near the bottom of the i'loat, through the upper part of the boiler, to and within the lower part of the regnlator A, so that steam may freely enter the tube and pass to the oat, thereby balancing the external pressure. At the same time, by the height of the tube, water is prevented from entering, so that the float is kept dry internally at all times. The float B may be of spherical, elliptic, or other form.

`a double puppet-valve, a, in connection with an outlet, b, that allows escape of steam when the double valve is raised. The valve a is raised at the upward movement of the main valves F by engagement of the upper valve t therewith, so as to let out the steam and immediately relieve the pressure in the pipe running from the regulator. The valves F are shaped, as shown, so that they will rst close and then move far enough to open the valve a. The upper valve is slightly largerin. area than the lower one, so as to keep the iioat submerged below its buoyancy-line, and in that way the float is given a constant tendency upward, thereby insuring a more positive action. also affords the advantage that iu case the float should be injured the overpressure ou the upper valve would cause the alarm to sound.

At d is the steam-pipe from the regulator for carrying steam to the pump or injector.

At D in Fig. 3 is an injector connected with the water-supply pip'ej', and provided with an overflow-pipe, 7L, that leads to a vessel, i.'

k is a piston inl the vessel t', connected by a rod, k', with a lever, I, that is arranged for opening and closing the overflow.

m is a valve fitted in the pipe g, that leads from the injector to the boiler, and the stein of the valve passes through the under side ot' the pipe, and is connected by a lever, n, to the rod k ot' the pistou lr. This arrangement is more especially designed for locomotives, but may be used for stationary boilers and for starting pumps.

The operation is as follows: As soon as the water lowers in the boiler the double valves of the regulator open, allowing the steam to pass to theinspirator or injector, thereby starting the overflow, which, pressing on the piston k in vessel pulls the lever l ofthe inspirator down, thereby closing the overflow-valve. The water then passes into the pipe g and to the boiler, lifting the valve m, which depresses the end of the lever wnext to the piston-rod 7c.

On the end of the lever n is a pawl, n', which engages teeth on the rod, so that when the current of water breaks the steam-pressure on Withinthe body A of the regulator is fitted valve -m forces the valve down, and by the lever n the piston k and rod k are lifted, and this at the same time lifts the lever l and the pawl n is tripped, leaving the piston k free to be acted upon again'by the overflow.

Having thus fully described my invention,

I claim as new and desire to secure by Letters Patent- 1. In a boiler feed-water apparatus, the combination, with the boiler, the steam-regulator, and the feed-water pipe, of the injector or inspirator having an overowoutlet, with its valve adapted to be closed by the action of the overflow Water after leaving the overflow-outlet to cause the feeding ot' the water to the` 3. The relief-valve a,con1binedwith the regui lator, and fitted for operation bythe main valves, substantially as described.

4. The regulator-valves F,of the form shown, and the double valve a, combined for operation as specified.

5. The combination of the injector D, the overflow h, the vessel i, levers u l, and valve m, substantially as described, for operation in the manner specified.

6. The combination of the injector D, overoW h, vessel i, levers'l u, piston k and its rod k', pipe g, and valve fm., substantially as and for the purpose set forth.

7. The combination of the injector D, overow h, vessel i, levers l n, the latter having the pawl n', piston k and its rod k', pipe g, and valvem, substantially as vand for the purpose set forth.

JOHN S. CLARK-E.

Witnesses: J. F. DUNNEBACK,

C. SEDGWIGK. 

